The MM3Z11W is a single 300mW Zener diode that is manufactured by Jingdao. It has an operating voltage range of 10.4V to 11.6V and is typically used to regulate a voltage in electronic circuits. The diode has an accuracy of ±5%, meaning that the output voltage can vary up to 5% from the nominal voltage value. The diode has a small form factor with an SOD-323W package, making it ideal for use in tight spaces. Additionally, it is compliant with the ROHS directives, meaning it is free of hazardous materials, and is safe to use in applications where environmental safety is a concern.